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hwmon: do not init sensors on startup

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The U-Boot Design Principles[1] clearly say:

  Initialize devices only when they are needed within U-Boot, i.e. don't
  initialize the Ethernet interface(s) unless U-Boot performs a download
  over Ethernet; don't initialize any IDE or USB devices unless U-Boot
  actually tries to load files from these, etc. (and don't forget to
  shut down these devices after using them - otherwise nasty things may
  happen when you try to boot your OS).

So, do not initialize and read the sensors on startup.

Signed-off-by: Heiko Schocher <hs@denx.de>
cc: Wolfgang Denk <wd@denx.de>
cc: Holger Brunck <holger.brunck@keymile.com>
This commit is contained in:
Heiko Schocher 2011-08-01 04:01:43 +00:00 • committed by Wolfgang Denk
parent fb6440ee9b
commit 780f13a9e1
11 changed files with 28 additions and 149 deletions
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2
include/dtt.h
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@ -52,7 +52,7 @@
#endif
#endif /* CONFIG_DTT_ADM1021 */
extern int dtt_init (void);
extern int dtt_init_one(int);
extern int dtt_read(int sensor, int reg);
extern int dtt_write(int sensor, int reg, int val);
extern int dtt_get_temp(int sensor);